Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model

doi:10.1088/1674-1056/20/4/048101

中国物理B ›› 2011, Vol. 20 ›› Issue (4): 48101-048101.doi: 10.1088/1674-1056/20/4/048101

Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model

张志明¹, 李蒙蒙², 龙云泽², 尹红星²

(1)College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China; (2)College of Physics Science, Qingdao University, Qingdao 266071, China

收稿日期:2010-06-13 修回日期:2010-12-18 出版日期:2011-04-15 发布日期:2011-04-15
基金资助:
Project supported by the Program for New Century Excellent Talents at the University of China (Grant No. NCET-07-0472) and the National Natural Science Foundation of China (Grant Nos. 11074138, 10910101081 and 10604038).

Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model

Li Meng-Meng (李蒙蒙)^a), Long Yun-Ze(龙云泽)^a)†, Yin Hong-Xing(尹红星)^a), and Zhang Zhi-Ming(张志明)^b)

^a College of Physics Science, Qingdao University, Qingdao 266071, China; ^b College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

Received:2010-06-13 Revised:2010-12-18 Online:2011-04-15 Published:2011-04-15
Supported by:
Project supported by the Program for New Century Excellent Talents at the University of China (Grant No. NCET-07-0472) and the National Natural Science Foundation of China (Grant Nos. 11074138, 10910101081 and 10604038).

摘要/Abstract

摘要： Cerium (III) nitrate/poly(vinylpyrrolidone) (Ce(NO₃)₃/PVP) composite fibres have been prepared by electrospinning. After calcining the composite fibres in air at 500 ℃, CeO₂ nanowires were obtained. The characterizations of the as-spun composite fibres and resultant nanowires have been carried out by a scanning electron microscope (SEM), an infrared spectrometer, an x-ray diffractometer and a fluorescence spectrophotometer. Interestingly, some unusual ribbon-like or twin fibres were observed besides the common fibres with circular or elliptic cross sections. We developed a fibre-division model resulting from Coulomb repulsion and solvent vaporization to interpret the formation of the ribbons or twin fibres, which has been confirmed by the SEM studies. Our results also indicate that the formation of the ribbons or twin fibres is less dependent on operation voltage and work distance.

关键词: cerium, nanowires, electrospinning, fibre-division model

Abstract: Cerium (III) nitrate/poly(vinylpyrrolidone) (Ce(NO₃)₃/PVP) composite fibres have been prepared by electrospinning. After calcining the composite fibres in air at 500 ℃, CeO₂ nanowires were obtained. The characterizations of the as-spun composite fibres and resultant nanowires have been carried out by a scanning electron microscope (SEM), an infrared spectrometer, an x-ray diffractometer and a fluorescence spectrophotometer. Interestingly, some unusual ribbon-like or twin fibres were observed besides the common fibres with circular or elliptic cross sections. We developed a fibre-division model resulting from Coulomb repulsion and solvent vaporization to interpret the formation of the ribbons or twin fibres, which has been confirmed by the SEM studies. Our results also indicate that the formation of the ribbons or twin fibres is less dependent on operation voltage and work distance.

Key words: cerium, nanowires, electrospinning, fibre-division model

中图分类号: (Nanoscale materials and structures: fabrication and characterization)

81.07.-b

81.05.Lg (Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials) 82.35.Np (Nanoparticles in polymers)

李蒙蒙, 龙云泽, 尹红星, 张志明. Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model[J]. 中国物理B, 2011, 20(4): 48101-048101.

Li Meng-Meng (李蒙蒙), Long Yun-Ze(龙云泽), Yin Hong-Xing(尹红星), and Zhang Zhi-Ming(张志明) . Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model[J]. Chin. Phys. B, 2011, 20(4): 48101-048101.

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Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model

Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model

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